sludge blanket Articles
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Controlling Sludge in Lamella Clarifiers
This month we are focusing on the control of sludge blanket build up in Lamella Clarifiers. Lamella Clarifiers, also known as Inclined Plate Separators (IPS) are in common use at Waste Water Treatment Sites as small footprint plant settlement units and are often employed in place of conventional settling tanks. Controlling Sludge Blanket Build up Effluent enters the Lamella Clarifier via an ...
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Anaerobic hybrid reactor: a promising technology for treatment of distillery spent wash
A laboratory-scale study was conducted to investigate the performance of anaerobic hybrid (combining sludge blanket and filter) and UASB (Upflow Anaerobic Sludge Blanket) reactors for the treatment of distillery spent wash. The start-up and granulation study demonstrated that early start-up and granulation were achieved in case of hybrid reactor (45 days) as compared with UASB reactor (60 days). ...
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Novel method for sludge blanket measurements
The most widely used methods for sludge blanket measurements are based on acoustic or optic principles. In operation, both methods are expensive and often maintenance-intensive. Therefore a novel, reliable and simple method for sludge blanket measurement is proposed. It is based on the differential pressure measurement in the sludge zone compared with the differential pressure in the clear ...
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Flotation outperforms sedimentation and ultrafiltration for turbidity and NOM removal at the drinking water treatment plant of Kluizen
The drinking water plant of Kluizen treats surface water with high levels of organics and alkalinity. In the original plant, built in 1974, sludge blanket clarification followed by filtration was applied for floc removal. In 2008, the plant was extended with two additional treatment lines where flotation is used instead of sludge blanket clarification. Flotation-filtration proved to be very ...
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Technical Focus: Sludge Blanket
Regardless of treatment process, sludge blanket control is an important aspect of any wastewater treatment plant, and correct monitoring and treatment of sludge is paramount for efficiency and cost control. Manual monitoring of sludge blanket levels is an occasional and often rushed method of control and can lead to inaccuracies being compounded over time, potentially leading to overspill into ...
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High rate anaerobic treatment of Sago wastewater using HUASB with PUF as carrier
Abstract: Sago industry is one of the major small-scale sectors in India and over 800 units are located in the southern State of Tamilnadu. Processing of sago generates enormous quantities of high strength wastewater requiring systematic treatment prior to disposal. The present study is an attempt to treat the sago wastewater using Hybrid Upflow Anaerobic Sludge Blanket (HUASB) reactor, which ...
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Simulation of granulation index and its utility for predicting percentage granules in UASB reactors
This paper researches on the development of a dimensionless number for predicting percentage granulation in Upflow Anaerobic Sludge Blanket (UASB) reactors for treating biodegradable wastewaters. A Biomass Granulation Index (BGI) has been framed based on the experimental work conducted using laboratory scale UASB reactors. This index depends on mixing in the sludge bed, induced due to biogas and ...
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Up Flow - Anaerobic Sludge Blanket Reactor (UASB)
About Anaerobic Wastewater Treatment Anaerobic Wastewater Treatment is a wastewater treatment system using biology that without using of air or oxygen. It aimed to remove organic pollution in wastewater, slurries and sludge. Anaerobic microorganisms convert organic pollutants into a “biogas” which contains methane and carbon dioxide.1 About Up flow-Anaerobic Sludge Blanket Reactor ...
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The use of the anaerobic baffled reactor for wastewater treatment: A review
A review concerning the development, applicability and possible future application of the anaerobic baffled reactor for wastewater treatment is presented. The reactor design has been developed since the early 1980s and has several advantages over well established systems such as the upflow anaerobic sludge blanket and the anaerobic filter. These include: better resilience to hydraulic and organic ...
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A built-in zero valent iron anaerobic reactor to enhance treatment of azo dye wastewater
Waste scrap iron was packed into an upflow anaerobic sludge blanket (UASB) reactor to form a zero valent iron (ZVI) - UASB reactor system for treatment of azo dye wastewater. The ZVI acted as a reductant to decrease ORP in the reactor by more than 40 mv and functioned as an acid buffer to increase the pH in the reactor from 5.44 to 6.29, both of which improved the performance of the anaerobic ...
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Evaluation of polishing of the effluent from UASB reactor by diffusers
Effluents from bench scale 56 L upflow anaerobic sludge blanket (UASB) reactor and four UASB based sewage treatment plants (STPs) of capacities ranging from 27 ML/d to 70 ML/d were aerated in batch as well as in continuous mode of operation. The process was monitored by measuring temporal trend in Oxidation Reduction Potential (ORP), dissolved oxygen (DO), chemical oxygen demand (COD) and ...
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Post-treatment of anaerobically pre-treated molasses wastewater in an aerobic granular sludge sequencing batch reactor
An aerobic granular sludge system was used for post-treatment of an Up-Flow Anaerobic Sludge Blanket (UASB) reactor treating molasses wastewater. The system was very effective in the treatment of the UASB reactor effluent. Up to 94.9-96.0% COD removals could be observed and it showed no signs of serious stress when subjected to high COD loads of 7.9 g l−1 d−1. The total nitrogen removals were in ...
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Characteristics of thermophilic granulation processes in UASB reactors
Thermophilic granulation processes were examined with synthetic wastewaters and were compared with the parallel mesophilic ones. The results indicated that granules could be formed well under compatible thermophilic surroundings in both carbohydrate- and protein-rich substrates. Compared with the mesophilic process, thermophilic granulation took relatively longer time, but thermophilic UASB ...
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Treatment of slaughterhouse wastewater in upflow anaerobic sludge blanket reactor
The performance of an upflow anaerobic sludge blanket (UASB) reactor operated at ambient temperature (20.9–25.2°C) was analysed for the treatment of slaughterhouse wastewater previously pre-treated for solid separation. The experimental work was carried out in a reactor with 15 L effective volume. Four organic loads were applied and the process performance was evaluated. The COD removal rate ...
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Sludge Blanket Theory: Digging deeper
With over 50 years of design and manufacturing experience, we are rightly proud of our British-built environmentally friendly SludgeWatch 715 Sludge Blanket Detector. Our user-friendly design is highly portable, simple to use and along with its low cost has worldwide appeal. Things have changed somewhat since our first Sludge Blanket Detector was made back in 1974. No more messy man-handling of ...
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Use of hybrid reactor in treating cellulose wastewater
The purpose of this study was to investigate the operation and control of hybrid system in treating wastewater from Iran Wood Fibre Company located in the Caspian Sea. The specific objectives were to determine the effect of substrate concentration on COD removal rate. The experiments have shown three zero-order reactions for the first, first to fourth and fourth to seventh day for all influent ...
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Performance of Upflow Anaerobic Sludge Blanket (UASB) reactor treating simulated wastewaters containing 1,1,2-Trichloroethane and 1,1,2,2-Tetrachloroethane
Reactors R2 and R3 were investigated for biodegradation of 1,1,2-Trichloroethane and 1,1,2,2-Tetrachloroethane respectively, during acclimation phase. Reactor R1 was maintained as control. The stepwise increment in concentration of 1,1,2-TCA from 5 mg/L to 40 mg/L in R2 caused no inhibition to reactor performance. The percentage of 1,1,2-TCA and COD removal was 99.9% and 98.6%, respectively. ...
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Biomineralisation of dye waste in a two-phase hybrid UASB reactor using starch effluent as a co-substrate
Starch and dye wastes have wide variation in their characteristics were treated on combination; this new technology supports the effective utilisation of starch waste in destruction of dyes. In this investigation, a lab-scale two-phase HUASBR was used at ambient temperature. After start-up, the dye and starch effluent were mixed at different proportions and fed into the reactor. The reactor was ...
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New Expansion for Pulsar in China
British non-contacting measurement and control specialists Pulsar Measurement has strengthened the team in China with the appointment of Eric Shi as National Sales Manager. He joins the growing Pulsar team that supports customers and distributors throughout Asia, supported by the Regional Head Office in Kuala Lumpur, Malaysia. Eric joins Pulsar after ten years of experience working with a leading ...
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Top 10 Wastewater Problems, Causes and Solutions
Wastewater management is an undesirable task for facility managers and their staff. But, it’s an important job, because wastewater problems can quickly turn into a very expensive and unsanitary mess. Below is advice from our engineers about the ten most common wastewater treatment problems you may encounter at your facility and how you can fix them. Problem #1: Floc is too small What to ...
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